CVE-2020-10994

Name: CVE-2020-10994
Creator: NVD / NIST
Published: 2020-06-25T19:15:12.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.42%

Last modified Jun 17, 2026

CVE-2020-10994 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In libImaging/Jpeg2KDecode.c in Pillow before 7.1.0, there are multiple out-of-bounds reads via a crafted JP2 file.. EPSS estimates a 1.42% chance of exploitation in the next 30 days.

Description

In libImaging/Jpeg2KDecode.c in Pillow before 7.1.0, there are multiple out-of-bounds reads via a crafted JP2 file.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

1.42%

69.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Python	Pillow	< 7.1.0
Fedoraproject	Fedora	31
Fedoraproject	Fedora	32
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04

References

https://github.com/python-pillow/Pillow/commits/master/src/libImaging/Patch, Third Party Advisory
https://github.com/python-pillow/Pillow/pull/4505Issue Tracking, Patch
https://github.com/python-pillow/Pillow/pull/4538Issue Tracking, Patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEBCPE4F2VHTIT6EZA2YZQZLPVDEBJGD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HOKHNWV2VS5GESY7IBD237E7C6T3I427/
https://pillow.readthedocs.io/en/stable/releasenotes/Release Notes
https://pillow.readthedocs.io/en/stable/releasenotes/7.1.0.htmlProduct
https://usn.ubuntu.com/4430-1/Third Party Advisory
https://usn.ubuntu.com/4430-2/Third Party Advisory
https://github.com/python-pillow/Pillow/commits/master/src/libImaging/Patch, Third Party Advisory
https://github.com/python-pillow/Pillow/pull/4505Issue Tracking, Patch
https://github.com/python-pillow/Pillow/pull/4538Issue Tracking, Patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEBCPE4F2VHTIT6EZA2YZQZLPVDEBJGD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HOKHNWV2VS5GESY7IBD237E7C6T3I427/
https://pillow.readthedocs.io/en/stable/releasenotes/Release Notes
https://pillow.readthedocs.io/en/stable/releasenotes/7.1.0.htmlProduct
https://usn.ubuntu.com/4430-1/Third Party Advisory
https://usn.ubuntu.com/4430-2/Third Party Advisory

Timeline

Published: Jun 25, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10994?

In libImaging/Jpeg2KDecode.c in Pillow before 7.1.0, there are multiple out-of-bounds reads via a crafted JP2 file.

How severe is CVE-2020-10994?

CVE-2020-10994 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.42% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10994?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10994?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST